/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package vip.zhenzicheng.rocketmq.api.simple;

import org.apache.rocketmq.client.consumer.*;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.message.MessageQueue;
import org.apache.rocketmq.common.protocol.heartbeat.MessageModel;

public class PullScheduleService {

  public static void main(String[] args) throws MQClientException {
    final MQPullConsumerScheduleService scheduleService = new MQPullConsumerScheduleService("GroupName1");

    scheduleService.setMessageModel(MessageModel.CLUSTERING);
    scheduleService.registerPullTaskCallback("TopicTest", new PullTaskCallback() {

      @Override
      public void doPullTask(MessageQueue mq, PullTaskContext context) {
        MQPullConsumer consumer = context.getPullConsumer();
        try {

          long offset = consumer.fetchConsumeOffset(mq, false);
          if (offset < 0)
            offset = 0;

          PullResult pullResult = consumer.pull(mq, "*", offset, 32);
          System.out.printf("%s%n", offset + "\t" + mq + "\t" + pullResult);
          switch (pullResult.getPullStatus()) {
            case FOUND:
              break;
            case NO_MATCHED_MSG:
              break;
            case NO_NEW_MSG:
            case OFFSET_ILLEGAL:
              break;
            default:
              break;
          }
          consumer.updateConsumeOffset(mq, pullResult.getNextBeginOffset());

          context.setPullNextDelayTimeMillis(100);
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    });

    scheduleService.start();
  }
}
